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Given forces.

Construct line of action for each.

Find the shortest distance (shortest distance
always perpendicular to line of action, which
implies
horizontal moment arm for vertical force).

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Image Added

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Given forces.

Construct line of action for each.

Find the shortest distance (shortest distance
always perpendicular to line of action, which
implies vertical moment arm for horizontal force).

Key Points

Some key points to remember:

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